var Radio = require('./radio.js')
var radio1 = new Radio("music radio","FM 106.7");
radio1.on('play',()=>{
    radio1.play();
})
radio1.on('stop',()=>{
    radio1.stop();
})
radio1.emit('play')
setTimeout(() => {
    console.log('lalalala……');
}, 2000);
setTimeout(() => {
    radio1.emit('stop')
}, 4000);